50552142561 has 6 divisors (see below), whose sum is σ = 73019761490. Its totient is φ = 33701428368.

The previous prime is 50552142559. The next prime is 50552142569. The reversal of 50552142561 is 16524125505.

50552142561 is a `hidden beast` number, since 5 + 0 + 5 + 52 + 1 + 42 + 561 = 666.

50552142561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 48716876961 + 1835265600 = 220719^2 + 42840^2 .

It is not a de Polignac number, because 50552142561 - 2¹ = 50552142559 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50552142569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2808452356 + ... + 2808452373.

Almost surely, 2^50552142561 is an apocalyptic number.

It is an amenable number.

50552142561 is a deficient number, since it is larger than the sum of its proper divisors (22467618929).

50552142561 is a wasteful number, since it uses less digits than its factorization.

50552142561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5616904735 (or 5616904732 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 50552142561 in words is "fifty billion, five hundred fifty-two million, one hundred forty-two thousand, five hundred sixty-one".